Dictionary > Axenic culture

Axenic culture

Definition
noun
A microbial culture that contains only one species, variety, or strain of microorganism
Supplement
Microorganisms can be grown under controlled laboratory conditions in cultures where they are allowed to grow and reproduce. Microorganisms are grown largely for research, taxonomic, and medical purposes. Bacterial cells, for instance, are grown in an agar-based culture in plates (petri dishes) by inoculation and incubation techniques. They can also be grown in liquid culture such as liquid broth where bacterial cells are suspended in it. Eukaryotes can also be grown in cultures given the proper optimum growth conditions. However, the most common eukaryotes grown in cultures are unicellular, such as yeasts. An axenic culture though would be a culture containing only one species, variety, or strain of organisms. There should not be any contaminants present. Microorganisms that are obligate symbionts, though, cannot be grown in axenic cultures.
Axenic cultures can be prepared by picking out a single (individual) cell that would initiate a culture. This technique is useful in growing a specific culture of fungi, algae, and certain metazoan. In bacteria, series of streak plate technique can be used in order to separate microbial population and achieve an isolated colony of cells uncontaminated with other microbes. Other way to achieve axenic cultures is the addition of antibiotics to prevent the growth of certain cells.
Word origin: a- (lack of) + Greek xenikos (foreign), from xenos (stranger)
See also:

Related term(s):

  • bacteria
  • culture


  • You will also like...

    vitamins
    A Balanced Vitamin Diet – Vitamins A – K

    A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

    Chemical composition of the body
    Chemical Composition of the Body

    The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..

    Cell Biology
    Cell Biology

    The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

    Homeostatic Mechanisms and Cellular Communication
    Homeostatic Mechanisms and Cellular Communication

    Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

    Kidneys
    Kidneys and Regulation of Water and Inorganic Ions

    The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..

    Water Cycle
    The Water Cycle

    The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

    Related Articles...

    No related articles found

    See all Related Topics